Metal-boring machine.



w. L. scHELLENBA'cH.

MEIALVaomNG MACHINE. APrLlCulon FILED Aumls. 191e.

WIL. SCHELLENBACH. METAL omNG MAcHlNE.

APPLICATION FILED AUG-IIE. ISIS.

Patented Dec. 18, 1917.

4 SHEETS-SHEET cn on w.l L. SCHELLENBAGH.

METAL BDRINGV MACHINE. APPLlcAlouy FILED Aue. 16 |916.

Patented D60. 18, 1917.

4 swans-sucer s lI'l/llllll rlllllll 'tain new "UNITED sTA'rns -PATENT OFFICE.

WILLIAM L. SCHELLENBACH, OF WYOMING, OHIO.

METAL-BORING insomnia.

Specification of Letters Patent.

lPatented Dec. 18, 1917.

Application led August 16, 1916. Serial No. 115,272.

To all whom. t may concern.' l lie it lainown that l, WILLIAM L. SCHnLf Lemmon, a. citl/.on of the United States, re-

siding at Wyoming, in the county'of Hamilton and State of Ohio, have invented cerand useful Improvements in Metal-Boring Machines, of which the fol lowing .is a specification.

My invention relates to improvements in metal boring machines. One of its objects is to provide an improved supporting frame ,i and arrangement of the operative parts `relrange 4of speed changes.

matic feed stop mechan also comprlses certaln details of form, comative thereto. Another object is to provide an improved and simple arrangement of the spindle driving mechanism with a Wide Another object is to provide improved spindle supporting -and feeding mechanism.' Another object is to provide Improved change gear splndle feeding and controlling mechanism. An-

other object is to provide imbpiroved autosm. y mventlon binationV and arrangement all of which Will be fully set forth in the description of the accompanying drawings in which:

Figure 1 is a side elevation cfa boring machine embodying my invention.

Fig. 2 is a front elevation of the drill spindle head and feed gear box detached.

Fig. 3 isa side elevation of the same.

Fig. 4 is a sectional detail of the drill spindle and its driving mechanism.

Fig. 5 is a sectional diagram illustrating 'the drill feeding mechanism arranged -in one plane.

Fig. 6 is a sectional detail of the hand and automatic feedl stop, on line "u 'v of Fig. 5. V Fig. 7 `is a detail of the main frame.

lFig. 8 is a sectional detail ofthe spindle driving mechanism.

`The accompanying drawings represent the preferred embodiment of my invention, in which A represents the column or main frame, B representsrthe spin dle housing detachably connected to the column A, and I) a work table which may be vertically and Y otherwiseadjustable as may be desired relative tothe column A. 1

E represents a frame or housing. in which is mounted th initial spindle driving mechanism, this housing E is detachably mounted in an eye or recess 2 in the column A so as to bereadily inserted or; removed as desired, and when inserted. occupies a posi-.-

t drill spindle l tion with its terminal gear 3 in mesh with a gear 4 on the back-gear shaft 5 mounted vertically in the spindle .housing and through which ower is transmittedtothe feeding mechanism.

The mechanism contained in 'the housing E except wherein itv relates particularly to and constitutes apart of a metal boringmachine, Will be embodied in a separate application. As apart of a boring machine it comprises shafts 6 and 7 journaled parallel to each other. A pair of gears 8 and 9 serve to connect the shafts 6 and 7 to rotate in opposite directions, while agroup of. 4three gears 10, 1land 12 serve to drive shafts 6 and '7 in the same direction. -The gears 8 and 12 are carried by clutch members 14 and l5 facing each other and loosely and to the drill' spindleA mounted on shaft. A double faced clutch member 16 splined to shaft l6 and shifted by hand lever 17, link 18 and shifting member 19 enable shafts 6 and 7 to be connectedA up to run relatively in the same or reverse direction. This enables power to be appliedby belt to a pulley 20 on the hub of clutch member 14, or where more convenient at.

mounted on shaft 6 are two gears 26 and 27 of diifrent` diameters. A sleeve 29` is splined to the sleeve 28' to move endwise thereon, andis provided with two gears 30 and 31 of different diameter.v A rack bar 32 is actuated. by a pinion at the inner endy of the controller shaft 33 to position the4r gears 30 and 31 alongthe sleeve 28, beingactuated over a dial plate 34 by means of .a hand lever 35 provided with a. spring latch pin. The gear 26 is provided with a. clutch member 36 and the sleeve 29 with a. cluthto clutch the shaft 6 to `the member 37 shaft .6.

A shaft l38 is in axial alinement with' shaftV 'i'1 but independently rotatable. gear 39 is splined to shaft 38 and can be .shifted into and @la 0f engagement with its;

- gear 27, by means of a rack bar l0 actuated spindle.

T58 and isfree to travel longitudinally therein andserves to drive the spindle I1 from' sleevef, and retainsl the sleept-'e oon by a pinion on the controller shaft el which shaft is provided with a hand lever 42 to move over a dial plate lil and to be .locked thereto by a spring lateh pin. A sleeve 41 is loosely mounted on the shaft 38 and earries three gears elf, #16 and 17, The gear 47 is in meshl continuously with gear 2U on shaft (3', and gears i5 and -iltfl are adapted to be selectively meshed with gears 5:50 and 3l Vres]' e'etively b v adjust-nient of sleeve 29end'- wise. The sleeve H has a clutch member 4,8 and the gear 39 aeluteh member 49 'to engage clutch member .18 to eluteh sleeve ti to shaft At the extreme inner end of shaft 53S, out-side ofthe. housing E is beveled gear 3, which meshes with a beveled gear 4 on the vertical shaft 5 jonrnaled and supported in the spindle housing B. The :novel ment of the controller levers 33 and 41 enables the gears and clutch members to be shifted into (,lii'erent combinations to provide a considerable .range of different speeds tor the gears il and 4.

The shatt is provided with a pinion vand a. gear 51., rigid on shaft 5. The drill spindle H is journaled at. its lower end 1n av sleeve 52 see Fig. 4 whieh sleeve is provided with a thrust collar 53 at its lower end to take the end thrust of the spindle H. A rack 54 is attached to one side of the sleeve and said rack is engaged by a pinion 55 on the drill feed shaft 56, to feed the drill spindle einlwise relative to the housing B.'

Surrounding the middle section of the drill spindle H is a chamber 'T'in which is loosely mounted a tubular driving sleeve 58 the bore of which is considerably greater than the, diameter of the sleeve and into which the. sleeve 52 and raek' telescope. The inner fare of the sleeve 58 has two or more keyways 59 out therein. At the upper end of the sleeve 52. and guided endwise in the sleeve 58 by means of keys engaging the keyways 59 is a eylindrieal head t3() which is keyedtto the spindle H and held in place between a collar G1 seated on a shoulder of the spindle and a nut (l2 threaded to the The head 6() rotates with the sleeve eenirie with spindle ll.

The/upper portion ot' the spindle ll. slides endvvise in :1 sleeve (i3 which is supported in bearings (laad G5 termin(lr )a rt of the hous v t ZD ing l). The sleeve 63 .is supported from its upper bearing by means of a Collar 66 and nut t'i, and at its lower end is provided with a head 68 -to lit the upper end of the here of .sl-eve 58 and provided with keys toengage the keyways 59 of sleeve 58 to 'drive said sleeve 'Between the bearinefs Get and (35- .t.l...A -l o..

on the sleeve 63 are inpunted a pinion (if) to' mesh with gear v5l and a gear I'Qto mesh gears 69 with the pinion 50. (See Figs. 1 and 2). and 70 are, connected together and are splined to sleeve 63 to drive said sleeve at. two (.li'erent relative speeds fromv shaft. 5 by shifting the Agears G9 and 70 endwise on sleeve G3. A slotted collar 71 is fitted between the tace of pinion G9 and the web of gear 70, and has downwardly projecting ears T2 to which the forked endsI of a lever 73 are, lattached, and a weight 74 at theopposite end of lever 73 eonnterbala-nees the weight ot' gears 09 and 70. A link T5 is eonneeted at oneI end to one of the earsi'Z and at its opposite end to a crank arm 76 on a Crank shaft 7T whieh has an operating hand lever 78 and a lockingpin T9 to engage a bracket 8O on housing l to look the crank arm 76 at opposite extremities of its throw, 1nd thereby shift gears G9 and 70 endwise u sleeve G3. Thel rap 81 forming part ot' the housing l is detachable to permit assembly ot' the operative parts and to give access therito. The. weight of the spindle `H is )Aneterably eounierbalaneed by means of a weight 150 and aehain 151 drawn over a pulley on the shaft 56, see Fig. 1. thereby eounterldancing the spindle l-I at a point below the sleeve 5).

A gear S2 is preferably cut on the upper end of sleeve 5S, and a recess S'lin .the-housing l enables change gears from the exterior of housing B to be meshed with gmt' S2. A vertical shaft 84 isjournaled at opposite yends in the housinw and at its n i v)er end is provided with a gear 85 rigid thereon and an adjustable quadrant 8G which rarries a train ot' detaehably mounted gears 87, SS, and S!) to transmit motion from the gear 82 'to the shaft 84,:and by changing the gears 87, 88 and 89 at any desired relativel rate of speed.I l

At the .lower end of shaft 84V is a beveled gear il() which meshes with and drives a beveled gear 91. keyed to a sleeve, 95. A shaft 92v is journaled at one end in the sleeve 05 vandat its opposite endV inthe easing l. ligidly mounted on the shaft U2, see Fig. 5, are two gears f and Dit.. held against moven'ient endwise. A sleeve 9G is splined to sleeve 9 5 and provided with two gears 9T and 98. A (frank arni' 5)!) on thel shaft 1U() serves to ,shift the .sleeve 9G to Several dili'erent. positions along the sleeve 95. and a oontroller lever`101 having a latch pill 102 serves to -look the sleeve 5)(l'lto any 1l- `iusted position. lluteh member 103 ral'- ried b v gear 03 and a rlnteh member104. carried by the sleeve 96 'enable all the members on shaft 92 to be loeked rigidly thereto.

A shaft 105 is journaled close to and parallel with shaft: 92 and is provided. with two gears '106 and '10.7 mounted rigid thereon,v a sleeve108 is loo, l"confined against. movement endwise. provided with three gears 10!)7 110, and 11.2.

The sleeve 95 is ly iourualed thereon and and .f1 gear ,114 is splined tothe shaft 105 and niovablc enflwilse thereon by means of a crank pin 115 on an operating shaft 116 engaging an annular recess 117 in the hub serve to shift and lock gear 114 to position.

The gear 114 has a clutch member' 119 and sleeve 108 has a clutch member 120 which 'when in engagement serve to lock the sleeve 108 to shaft 105. i

The ends of shaft 105 are journaled in sleeves 121 and 122 which are carried by the housing B and 'which sleeves a so serve exii-.rinniy as a hinge bearing for n yoke-shaped frame l. in whiclris journaled a worm shaft 124. The shaft 124 is provided with two g' .ru 125 and 126 which arewattac-hed together and splined to shaft 124 and adjust- ;iihle cudwise thereon by means of a keeper 12T 'which slides on a guide rod 128 carried hylilu frame K and actuated by a crank pin 129011 the crank shaft 130 which shaft is actuated by a handlever 131 and locked by a 'pin 132, to enable gear 125.. to be shifted into mesh with gear ,107 or gear 126 into Ylmes'h with gear 106`as desired.. A worm 133 meshes with and drives a worm wheel 134 on the shaftG which carries the pinion 55 and serves to feed the spindle H endwise. A hand 'wl'ieel 135- enables the Worm to be "f Worm wheel. To hold the Worm in engagement a springlatch member 136 is carried by the frame' K and a latch memberl 137 to engage therewith iscarried by the colp' 138 `forming part of the spindle' housing A shaft 139 carries a 'crank arm 140 to engage a pin 141 on frame K to lift the Worm into.

engagement with the Worm Wheel and to cause the two latch members 136 and 137 to engage a1id"`l`1old the 'worm in mesh. A

'crank arm 142 `on shaft 139 is in position to strike the latch member 136 and release it from latch member 137. This may be done by hand through the hand lever 143, which y also serves to reset the latchl member 136 in y "engageine'nt with latch member 137.

The latch member 137 carries a soi-ing retracted push pin ,154 which can be trippedby antomatic means to push the latch member 16 out of'engagement with latch `member 137 thus enabling the worm to be automatically released fromthe wormwheel. `To automatically tripthe,latch 136 I provide a` worm 144 splined to the shaft 56. A spring pin or tooth 145 is seated in a recess in the cap member. 138 and engages the spiral groove of worm 144 causing said worin toV more endwse on shaft 56 as shaft 56 1'0- tates. A. split ring 146 can be clamped to any position on the worm 144 and carries a beveled tongue which may make several revdlutions about shaft 56, outside of the cap 138, but will finally sweep into the same plane with and engage the head of the push pin 154 which normally projects into the re-` p cess inside of tongue 147' of the latch 137 and thereby pushes the pin 154 inwardly and forces the latch'member 136 outof engagement with latch member 137 to automatically release the worm from the worm wheel and stop the spindle feed. vWhen the split ring 146 lis unclamped from the worm 144 a spring pin 148 engages a notch in the.

tongue 147 to hold said tongue in idle position.

As illustrated in Fig. 54the drive would be from beveled gear 91 to sleeye 95and through the clutch direct to gear 93 and shaft 92, thence to gear 112 and -clutch to geenL `114 and shaft; 105, and thence by gears lOfhlnd 125, to shaft 124. With the clutch on shaft 92 disengaged the drivewvould be by either of two pairs of gears-from. sleeve 96 to sleeve 108 and thence direct lbyfclutch from sleeve 108 to shaft 105- or indirectlythroigh shaft 92 by gears 112, 9 3, 94 and Illto shaft 105 and thence asillustrated toi shaft7124, or by way of gears 106 and 126' from shaft.

` 105 to shaft 124, thereby providing a Wide range of speeds for the drill spindle feed4 ing shaft 56, to provide for tapping and other operations. requiring speed changes between the drill driving and feeding mechanlsms.

The spindle drivin sleeve, of larger diaiheter than the spin `e, with heads splined thereto, provides s ace inwhich the 4spindle feeding sleeve an its rack may telescope` and also provides for .such an arrangement of sliding key faces between'the sleeve and spindle as to preventv excessive strain or cramping in use. This arrangement fofthe .spindle drive 4also has several'advantages in cost of production, assembly,` and renewal of parts.

The mechanism herein illustratedl and described is capable of considerable modification without departing fromV the scope ofthe appended claims l.

4Having described my invention, what I" claim is: `1

1. A' metal boring machine comprising 4e substantially vertical. column having a drill spindle, and drill spindle driving andcfpedf ing mechanism, an eye in said column,` nd

4an initial driving mechanism detach.,I 1y

housed in the eye of said column to drive and feed said drill spindle.

2. A metal boring machine comprising la mainframe, a drill spindle mounted upon I said frame, secondary mechanism to drive 'and feed said drill spindle mountedupon said frame, an eye in said frame, and initial driving mechanism i'letaehably mounted in 7 a said eye and operatively connected to said secondary driving mechanism to drive said spindle. y

3. A metal boring machine comprising a main frame, a. drilhspindle mounted upon said vtrarne, secondary mechanism to drive said drill spindle mounted upon said frame, an eye in said frame, an independent lions# ing,r delaehably mounted in said eye and an initial drivingr ini'rehanisni mounted in said .independent housing and operatively eonne-Cted tosaid secondary drivingmechanism to drive said spindle.

l. A metal boring machine comprising a main f 'aine haa'ing an eye therein, a drill spindle mounted upon said frame, secondary mechanism to drive said drill spindle mounted upon said frame, an independent housing detaehably mounted in said eye, an initial driving' meehanism mounted in said independent housing and operatively connected to said secondary driving mechanism to drive said spindle and means to apply-belt power to said initial driving;r mechanism in either ot' two planes at substantially right angles to each other.

A metal boring maehine comprising a main frame,l a drill spindle mounted thereon, seeondary driving mechanism mounted on said trame to drive said spindle, an eye in said frame. a housing detaehably mounted in said eve4` and an initial driving and speed changing 'mechanism mounted in said housing' and operatively eonneeted to said secondary driving;r mechanism.

6. A metal boring ma'ehine eomprising a main frame, a drill spindle housing, a drill spindle journaled and adjustable endwise in said housing7 a rotatable primarydriving sleeve eonenntrie with and 'supporting one end ot said spindle, a non-rotary feeding sleeve. Carried by Said spindle nea rits op-v positeV end, a. seeoi'idary Splined driving sleeveI eoneentrie with the intermediate portion of said drill spindle, and a head rigidlyy mounted on the drill spindle and splined to. Said secondary driving sleeve to drive the spindle there-trom.

7. A metz-'l boring' iiiaehinel comprisingr a main' frame a. drill spindle housing'` a, drill` spindle jonrnaled and adjustable endivise in said housing'. a head rigidly mounted on the spindle, a dri viner sleeve ol greater internal diametri' than the spindle journaled in the/ spindle housing eneiieling4 the spindle and to which said head on the spindle is spliued` to dri ve the spindle and a: nou-rota ry spindle t'eediner sleeve having teleseopie. relation to said driving' sleeve.

S. 'A metal boringv machine comprising. a ma in frame, i spindle jouri'ialed and :idjuslalile endwise therein, a spindle bueh 4ear shaft having spindle liousingia drillgears of different diameter journaled in the from said primary driviiig sleeve, a head carried rigidly by the spindle and splifned to said seeondar)v sleeve to drive the spindle, and a non-rotary sleeve on said spindle to feed the spindle endwise,

9. A metal boringI maehine comprising `a main frame5 a spindle housing', a drill spindle journaledl and adjustable endwise in said housing means to drive said spindle, a nonrotary sleeve provided with a rack to feed the spindle endwise, a main t'eed shaft hav# ing a pinion to engage sa id raek and a worin wheel. means'earriial by .said housing to'diive said worin wheel eomprising` a primary shaft, a secondary shaft and a worm shaft, speed changing' gears carried b v said primary, secondary, and worm shaft i-'espectively adjus-table to change the relative speed of said shafts, and nieans to engage and disengage' the worm on said worin sha-ft with said worm wheel. l

10. A inetalboring machine comprising a. spindle housing, a drill spindle journaled and adjustable endwise in said housi1'1g,a non-rotaryr sleeve provided with a rack to t'eed said spindle endwise, a main spindle feeding` shal't provided with a. pinion to mesh with said rack and a-worm wheel, a. primary shaft havin;I v rigid thereon, gears ot' ditlerent'diameter loosely journaled and adjustable enfilwi'se thereon, and a eluteh to journaled gears to the with and drive.` said worm wheel 4vand with`A gears o't` ditlierent diameter .splinei'l tli'ereto to `eleet'ivelv, mesh with the 'gears rigid' o11 lsaid .seeondary shaft. i

l1.. ln a metal boring;r machine a ma u1 drill spind le feeding shaft provided with a pinion to feed the drill spindle einlwiseand awvorm -wheeL a worin shat't mounted in hearings adjustable to and from said main spindle gears of different diameter y clutch said loosely-v shai't, a seeondarv" shait havingvgoars rigid thereon, a gear' splined thereto`,- gears carried by a-sleeve' l'eeil sha ltand provided with aQwernito engage and drive said worin wheel, means to drivesaul worm sha that d1il`erentrates-of 'i thereto,

speed, and lnteli mechanism to be engaged and released to engage and seperate said worm and Worm Wheel.

l2, In n metal boring machine e, mitin drill spindle feedingsl'iai't provided with :i mein berto feed the drill spindle endwiee, e inem ber to drive Said shaft and e Worm splined a stationsirily mounted tooth to engage and feed seid Worm .endwise on Seil; main spindle feeding shaft, e releasing dog to be clamped at a predetermined position upon seid worm driving mechanism adjustable into und out of engagement with Suid driving member7 mechanism to hold said driving meeluinisxn in engagement with seid drivingnieinlier, and :L latch in the path oi travel of Seid dog to automatica-ily releziee said driving mechanism from sziid driving member.

13. A metal boring :nain frame, n drill spindle housing, a drill spindle journaled sind adjustable endwise in said housing, e head rigidly mounted on machine comprising a' seid spindle, n drivingf sleeve of greater internal diameter than the spindle splined to the bend on the spindle, n noemt-try spindle feeding sleeve inning telesvopie relation to `wild lriving';l sleeve, und it eounterbu-lmiee for the drill epimlle attached to said spindle below seid driviiig sleeve.

1.4. A metal boring nmeliii'xe comprising n mein tranne, a Adrill spindle housing, :i sleeve to rotatably iliivza the drill St'iindle-rotutflibly suspended within die housing, a drill spindle splined te und adjustable endwiee relative to Suid drh-'ing eleeve1 :1 nondfotury sleeve ln'oiided with u. reak und pinion drive to 'feed said drill :spindle vndwise,,seid-non 'rotary Sleeve telemioping within smid driving sleeve.

In testimony whereof l. have :Ll'lixed my signature in the presence of two witnesses.

WVILliIAB/.l L. SCHELLENBACH. -Witneeses l. lV. Minn-s, W. THORNTON Boenn'r. 

